B - Operations – Transporting – 31 – B
Patent
B - Operations, Transporting
31
B
B31B 1/64 (2006.01) B29C 65/16 (2006.01)
Patent
CA 2552408
The invention relates to a method and an apparatus for jointing members made of plastic-coated paper or board. In accordance with the invention, the sealable members are retained in position with clamps (8) and sealing is performed with a laser sealing means (7) moving along the sealing line, a means (9) for opening the seal point pressing the members apart to continue keeping the seal point open, a laser beam (11) being directed to the open seal point for melting the coating plastic and a means (12) for closing the seal pressing finally the members against each other, the plastic jointing the members when solidified. The method is applicable to lateral sealing of bag or container packages formed of blanks (1), among other things.
La présente invention se rapporte à un procédé et à un appareil de scellage d'éléments constitués de papier ou de carton recouvert de plastique. Selon la présente invention, les éléments scellables sont maintenus en place par des pinces (8) et le scellage est effectué avec: un moyen (7) de scellage au laser qui se déplace le long de la ligne de scellage, un moyen (9) d'ouverture du point de scellage qui pousse et sépare les éléments pour maintenir ouvert le point de scellage, un faisceau laser (11) qui est dirigé sur le point de scellage ouvert pour faire fondre le plastique d'enrobage et un moyen (12) de fermeture du point de scellage qui pousse l'un contre l'autre les éléments, le plastique reliant lesdits éléments lorsqu'il se trouve solidifié. Le procédé peut être utilisé pour effectuer le scellage latéral d'un sachet ou d'autres dispositifs de contenant formés d'ébauches (1), entre autres.
Hovikorpi Jari
Laakso Petri
Maeaettae Paeivi
Miikki Nina
Penttilae Raimo
Borden Ladner Gervais Llp
Stora Enso Oyj
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